STANDARD SAMPLE OF MASS FRACTION OF HYDROGEN SULPHIDE, METHYL MERCAPTAN AND ETHYL MERCAPTAN IN OIL Russian patent published in 2025 - IPC G01N33/22 G01N30/02 G01N1/28 

FIELD: chemistry.

SUBSTANCE: invention relates to analytical chemistry and specifically to means of metrological support of methods for measuring content of hydrogen sulphide, methylmercaptan and ethylmercaptan in oil in order to control its quality. Described is a composition of a standard sample material intended for metrological support of methods for measuring content of hydrogen sulphide, methyl mercaptan and ethyl mercaptan in oil, which is a liquid mixture containing stabilized oil, a mixture of hydrocarbons with density from 690.0 to 972.0 kg/m³ at 20 °C, hydrogen sulphide, methyl- and ethyl mercaptans, as well as an organosulphur additive, with the following content of components: hydrogen sulphide from 1 to 300 mln^-1; methylmercaptan from 1 to 300 mln^-1; ethyl mercaptan from 1 to 300 mln^-1; organosulphur additive from 1 to 10 wt.%; mixture of hydrocarbons with density from 690.0 to 972.0 kg/m³ at 20 °C from 20 to 30 wt.%; stabilized oil from 60 to 70 wt.%.

EFFECT: development of a matrix standard sample intended for metrological support of methods for measuring content of hydrogen sulphide, methyl mercaptan and ethyl mercaptan in oil, made from oil; wherein standard sample material should be liquid, homogeneous, stable during storage and transportation, delivered in ampoules, not in metal cylinders.

4 cl, 1 tbl, 3 ex